Linksys AG241 manual Advanced VPN Tunnel Setup

Page 31

ADSL2 Gateway with 4-Port Switch

 

• Key Life Time. In the Key Lifetime field, you may optionally select to have the key expire at the end of a time

 

period of your choosing. Enter the number of seconds you’d like the key to be used until a re-key negotiation

 

between each endpoint is completed.

 

Phase 2

 

• Encryption. The encryption method selected in Phase 1 will be displayed.

 

• Authentication. The authentication method selected in Phase 1 will be displayed.

 

• PFS. The status of PFS will be displayed.

 

• Group. There are two Diffie-Hellman Groups to choose from: 768-bit and 1024-bit. Diffie-Hellman refers to a

 

cryptographic technique that uses public and private keys for encryption and decryption.

 

• Key Life Time. In the Key Lifetime field, you may select to have the key expire at the end of a time period of

 

your choosing. Enter the number of seconds you’d like the key to be used until a re-key negotiation between

 

each endpoint is completed.

 

Other Setting

 

• NetBIOS broadcast. Check the box next to NetBIOS broadcast to enable NetBIOS traffic to pass through the

 

VPN tunnel.

 

Anti-replay. Check the box next to Anti-replay to enable the Anti-replay protection. This feature keeps track of

Figure 5-19: Advanced VPN Tunnel Setup

sequence numbers as packets arrive, ensuring security at the IP packet-level.

 

Keep-Alive. If you select this option, the Gateway will periodically check your Internet connection. If you are

 

disconnected, then the Gateway will automatically re-establish your connection.

 

• Check this box to block unauthorized IP addresses. Enter in the field to specify how many times IKE must fail

 

before blocking that unauthorized IP address. Enter the length of time that you specify (in seconds) in the

 

field.

 

When finished making your changes on this tab, click the Save Settings button to save these changes, or click

 

the Cancel Changes button to undo your changes. For further help on this tab, click the Help button.

 

Chapter 5: Configuring the Gateway

26

The Security Tab

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Contents ADSL2 Gateway Copyright and Trademarks How to Use this GuideWord definition Table of Contents 2Computer-to-VPN Gateway Network21 Internet Policy Summary Figure B-11 Filter Acton Tab Welcome IntroductionWhat’s in this Guide? ADSL2 Gateway with 4-Port Switch What’s an IP Address? Planning Your NetworkGateway’s Functions IP AddressesDhcp Dynamic Host Configuration Protocol Servers What is a VPN?Dynamic IP Addresses VPN Gateway to VPN Gateway Why do I need a VPN?VPN Gateway-to-VPN Gateway Line Getting to Know the ADSL2 Gateway with 4- Port SwitchDSL Overview Connecting the ADSL2 Gateway with 4-Port SwitchConnection to a Computer Adsl Connection Security Configuring the GatewaySetup Access RestrictionsApplications & Gaming AdministrationStatus Internet Setup How to Access the Web-based UtilitySetup Tab Basic Setup TabStatic IP RFC 1483 Bridged Dynamic IPRFC 2516 PPPoE IPoARFC 2364 PPPoA Bridged Mode OnlyNetwork Setup Optional Settings Required by some ISPsDynDNS.org Ddns TabTZO.com Advanced Routing Advanced Routing TabFirewall Security TabVPN 15 VPN Manual Advanced VPN Tunnel Setup19 Advanced VPN Tunnel Setup Internet Access Access Restrictions Tab22 List of PCs Single Port Forwarding Applications and Gaming TabPort Range Forwarding DMZ Port TriggeringApplication-based QoS Advanced QoSGateway Access Administration TabManagement UPnP ReportingEmail Alerts Backup&Restore DiagnosticsPing Test Firmware Upgrade Factory DefaultsUpgrade from LAN 36 Reboot RebootInternet Connections Status TabGateway Gateway Information40 DSL Connection DSL ConnectionCommon Problems and Solutions Appendix a TroubleshootingNeed to set a static IP address on a computer Want to test my Internet connection ADSL2 Gateway with 4-Port Switch ADSL2 Gateway with 4-Port Switch TCP UDP Can’t get the Internet game, server, or application to work My DSL service’s PPPoE is always disconnecting To start over, I need to set the Gateway to factory defaultNeed to upgrade the firmware Firmware upgrade failed, and/or the Power LED is flashingPower LED flashes continuously Does the Gateway support IPX or AppleTalk? Frequently Asked QuestionsWhere is the Gateway installed on the network? Is IPSec Passthrough supported by the Gateway?Does the Gateway support ICQ send file? Is the Gateway cross-platform compatible? What is DMZ Hosting?What are the advanced features of the Gateway? Will the Gateway function in a Macintosh environment?Can the Gateway act as my Dhcp server? What is a MAC Address?How do I reset the Gateway? How do I get mIRC to work with the Gateway?WAG54G EnvironmentFilter List 1 win-Router How to Establish a Secure IPSec TunnelCreate an IPSec Policy Build Filter ListsFigure B-4 IP Filter LIst Filter List 2 Router -winFigure B-7 IP Filter List Tunnel 1 win-Router Configure Individual Tunnel RulesFigure B-13 Authentication Methods Tunnel 2 Router-win Figure B-16 Tunnel Setting TabFigure B-19 IP Filter List Tab Figure B-22 Preshared Key Figure B-25 Connection Type Assign New IPSec PolicyFigure B-28 VPN Tab Create a Tunnel Through the Web-Based UtilityWindows 98 or Me Instructions Figure C-1 IP Configuration ScreenFigure C-3 MAC Address/Physical Address Windows 2000 or XP InstructionsAppendix D Upgrading Firmware Figure D-1 Upgrade FirmwareAppendix E Glossary ADSL2 Gateway with 4-Port Switch ADSL2 Gateway with 4-Port Switch ADSL2 Gateway with 4-Port Switch ADSL2 Gateway with 4-Port Switch ADSL2 Gateway with 4-Port Switch Appendix F Specifications ADSL2 Gateway with 4-Port Switch FCC Statement Appendix G Regulatory InformationAppendix H Warranty Information Europe Mail Address Appendix I Contact InformationOutside of Europe Mail Address
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